Filter cartridge and cylinder



Sept. 7, 1937. w. d. BURHANS FILTER CARTRIDGE AND CYLINDER OriginalFiled Feb. 18, 1935 2 Sheets-Sheet 1 Inventor w. G. BURHANS Re. 20,494

FILTER CARTRIDGE AND CYLINDER 2 Sheets-Sheet 2 original l iled Feb. 18,1935 Inventor Fui'am named Sept. 7, 1937 v UNITED STATES PATENT orriesOriginal No. 2,068,263, dated January 19, 1937,

Serial No. 7,097, February 18, 1935. Application for reissue April 5,1937, Serial No. 135,197

. 5 Claims.

This invention relates to a filter like, the general object of theinvention being to form the body of the cartridge by a layer of wiremesh and a layer of waste material or the like, with the two layersrolled togetherto provide a substantially solid body, the body beingplaced in a. bag of fabric and resting on a wire mesh bottom placed inthe bottom of the bag.

Another object of the invention is to provide the body with a tubularcore.

Another object of the invention is to provide a cylinder for a cartridgehaving a. by-pass arrangement for by-passing the oil or other fluidaround the cartridge when the pressure becomes excessive.

This invention also consists in certain other Fig. 3 is a. verticalsectional view through the.

' improved cylinder.

Fig. 4 is a top plan view of the inner member.-

As shown in these drawings, the letter A indicates the bodyrof thefilter cartridge which is composed of wire mesh l and waste material 2or the like. In carrying out the invention, the layer of waste materialis placed on the wire mesh and then the parts are rolled into acylindrical body as will be seen from Figs. 1 and 2, the layers formingspirals The body is placed in a bag 8 of fabric and a disk I of wiremesh is placed in the bottom of thebag before the body is put in placeand I prefer to make the upper end of the cartridge of dome shape asshown in Fig. l with the upper end of the bag fitting snugly this partof the body and suitably fastened at its top as shown in Fig. 1.

Figs. 3 and 4 show a cylinder for containing a cartridge and as shown inthese views, the cylinder comprises an outer member or tank I0having'the cover II with means, not shown, for providing a tightjuncture between the cover and the upper end of the tank and within thiscartridge for use in a'fllter cylinder for filtering oils and the tankI0 is a smaller tank l2 which has lugs l3 at its upper end for engagingportions of the upper part of the tank I 0 so. as to space the tanksapart. Both tanks have rounded lower ends with their ends connectedtogether by a perforated tube It, the tube having a plug l5 threaded inits lower end. The perforations of the tube communicate with the space16 between the bottoms of the tanks and a spring-pressed check valve I!normally holds the bottom of the inner tank out of communication withthe space l6 and the interior of the tube. A false bottom 18 is providedfor the inner tank I! above the rounded bottom thereof and has anopening is centrally arranged therein. An inlet nipple 20 extendsthrough the two rounded bottoms of the tanks and is adapted to beconnected to a source of supply and has a port 2| therein opening outinto the space between the rounded bottom of the inner tank and thebottom I 8. Of course, the cartridge is placed in the inner tank andrests upon the bottom I8, the top of ,the cartridge being covered by aperforated substantially semi-spherical member 22.

Thus the oil or other fluid flowing from the sup-ply or other containerwill pass through the nipple 20 and discharge through the port 2| intothe bottom of the inner. tank and then pass through the'opening l9 andthrough the cartridge and then through the member 22 and out through theoutlet 23. When the pressure belowthe cartridge becomes excessive, saidpressure will move the valve l1 off its seat so that the oil will bypassaround the cartridge through the tube I4 and the space 16 and flow outthrough the outlet 23.

When it is desired to remove-sediment from the bottom of the tank l0,theplug I5 can be removed together with the valve assembly and then theparts can be drained and the sediment will pass through the perforationsin the tube M.

The oil collecting in the space between the two tanks will act as acooling medium for the oil passing through the device and as will beseen from Fig. 3, when the plug I5 is in position, it covers the lowerperforations in the tube I so that the by-passed oil will not disturbthe sediment in the bottom of the outer tank but whenv It is to beunderstood that changes may bemade in the construction and in thecombination and arrangement of the several parts, provided that suchchanges fall within the scope of the appended claims.

I claim: a

1. In a filter device, a cartridge cylinder comprising an outer tank, aninner tank spaced from the outer tank, a discharge connection at the topof the outer tank, a filtering cartridge in said inner tank, means forintroducing the fluid to be filtered into the bottom of the inner tankbelow the cartridge, a perforated tube connecting the bottoms of the twotanks together with the perforations connecting the interior of the'tubewith the space between the tanks, anda springpressed valve normallyclosing communication between the tube and the bottom of the inner tank2. In a filter device, a cartridge cylinder comprising an outer tank, aninner tank spaced from the outer tank, and having its top open and incommunication with the top of the outer tank,

a discharge connection at the top of the outer -.tank,. a. filteringcartridge in said inner tank,

means for introducing the fluid to be filtered into the bottom of theinner tank below the cartridge and means for by-passing the fiuidbetween the tanks when the pressure of the fluid at. the bottom of theinner tank becomes excessive, such means comprising a perforated tube incommutop of the outer tank, a filtering cartridge in said inner tank,mean's'ior introducing the fiuid to be filtered into the bottom of the,inner tank below the cartridge, a perforated tube connected with thebottoms oi the two tanks with its upper end in communication with thebottom of the inner tank, and the perforations connecting the interiorof the tube with the space between the tanks, a valve for normallyclosing communication between the tube and the inner tank and openingwhen excessive pressure occurs in the bottom oi the inner tank, some ofthe perforations in the tube being arranged in the upper portion thereofand some in the lowerportion thereof and a plug closing the lower end ofthe 20,495 I tube and the lower perforations, said plug being removedwhen the tanks are to be drained.

4. In a filter device, a cartridge cylinder comprising an outer tank, aninner tank spaced from the walls of the outer tankand permanent- 1ysecured to the outer tank to form an outer chamber, there beingcommunication between the upper ends of the inner tank and chamber,

a discharge connection for the chamber, a filtering. cartridge removablylocated in said inner tank, means for introducing the fluid to befilteredinto the bottom of the inner tank below the cartridge, and aconnection-between the bottom of the inner tank and the bottom of thechamber including a normally closed springpressed valve arrangement tonormally prevent discharge connection for the chamber beingsubstantially above the bottom thereof so that liquid bypassed throughthe valve arrangement is subiected to a substantial path of upward fiowin which settling of solid matter may occur.

, 5. In a filter device, a cartridge cylinder comprising an outer tank,means'spaced from the walls of the outer tank and permanently secured tothe outer tank to provide an outer chamber and an inner cartridgereceiving chamber, there being communication between the upper ends ofsaid chambers, a discharge connection for-the outer chamber, afilteringcartridge removably located in said inner chamber, means forintroducing the fiuid to be filtered into the bottom of the innerchamberbelow the cartridge, and a connection between ,the bottom of theinner chamber and the bottom of the outer chamber including a normally;closed spring-pressed valve arrangement to normally prevent flowthrough the connection but to yield to permit fiow, therethrough whenthe pressure in the bottom of the inner chamber exceeds a predeterminedvalue,

said connection containing the valve forming the sole communicationbetween the bottoms of the inner and outer chambers and said dischargeconnection for the outer chamber being substan tiaily above the bottomthereof so that liquid 1137-,

